'\" t
.\"     Title: zmq_atomic_counter_new
.\"    Author: [see the "AUTHORS" section]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 01/17/2021
.\"    Manual: 0MQ Manual
.\"    Source: 0MQ 4.3.4
.\"  Language: English
.\"
.TH "ZMQ_ATOMIC_COUNTER_N" "3" "01/17/2021" "0MQ 4\&.3\&.4" "0MQ Manual"
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.SH "NAME"
zmq_atomic_counter_new \- create a new atomic counter
.SH "SYNOPSIS"
.sp
\fBvoid *zmq_atomic_counter_new (void);\fR
.SH "DESCRIPTION"
.sp
The \fIzmq_atomic_counter_new\fR function creates a new atomic counter\&. You can use this in multithreaded applications to do, for example, reference counting of shared objects\&. The atomic counter is at least 32 bits large\&. This function uses platform specific atomic operations\&.
.SH "RETURN VALUE"
.sp
The \fIzmq_atomic_counter_new()\fR function returns the new atomic counter if successful\&. Otherwise it returns NULL\&.
.SH "EXAMPLE"
.PP
\fBTest code for atomic counters\fR. 
.sp
.if n \{\
.RS 4
.\}
.nf
void *counter = zmq_atomic_counter_new ();
assert (zmq_atomic_counter_value (counter) == 0);
assert (zmq_atomic_counter_inc (counter) == 0);
assert (zmq_atomic_counter_inc (counter) == 1);
assert (zmq_atomic_counter_inc (counter) == 2);
assert (zmq_atomic_counter_value (counter) == 3);
assert (zmq_atomic_counter_dec (counter) == 1);
assert (zmq_atomic_counter_dec (counter) == 1);
assert (zmq_atomic_counter_dec (counter) == 0);
zmq_atomic_counter_set (counter, 2);
assert (zmq_atomic_counter_dec (counter) == 1);
assert (zmq_atomic_counter_dec (counter) == 0);
zmq_atomic_counter_destroy (&counter);
return 0;
.fi
.if n \{\
.RE
.\}
.sp
.SH "SEE ALSO"
.sp
\fBzmq_atomic_counter_set\fR(3) \fBzmq_atomic_counter_inc\fR(3) \fBzmq_atomic_counter_dec\fR(3) \fBzmq_atomic_counter_value\fR(3) \fBzmq_atomic_counter_destroy\fR(3)
.SH "AUTHORS"
.sp
This page was written by the 0MQ community\&. To make a change please read the 0MQ Contribution Policy at \m[blue]\fBhttp://www\&.zeromq\&.org/docs:contributing\fR\m[]\&.
